Combination-lock.



J. H. HOBSON.

COMBINATION LOCK.

APPLIUATIQN FILED SEPT. 25, 1911v LG5QQZ 69. Patented Mar. 4, 1.913,

2 SHEETSSHEET 1.

I J. H. HOBSON;

COMBINATION LOOK. I APPLICATION FILED SEPT. 25, 1011.

11,054,769. Patented Mar.4, 1913.

3 SHEETS-SHEET 2.

" ES iA-T N :FFIC

Jenn n. Henson, or nnnmue, ARKANSAS, SSIGNOB or one-HALF 'ro swarms r.

AUSTIN, or DENNI a, menses.

COMBINATION-LOCK.

To all wkomz't may concern:

Be it known that I, Join: H. HoBsoN, a citizen'of the UnitedSt-ates,residing at Denning, in the count-yof Franklin and State ofArkansas,-have invented a new and useful Combination-Lock, of which thefollowing is a specification.

The present invention relates to improvements in combination locks, theprimary object of the invention being the provision of a novel form oflock, to be used upon safe or vault doors where a series of bolts areemployed, or where it'is desired simply to use a single bolt. I

A further objectof the present invention is the provision of a lock ofthis character in which the locking bplts when manually projected,automatically release the tumblers to prevent the automatic retractionof the bolts, and where manual manipulation of the tumblers to set adesired combination, permits of the automatic retraction of the bolts atthe instance of the set of the combination.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed without departing from the spirit of theinvention.

In the drawingsFigure l is a frontview of a safe with the lock inoperable position with relation thereto.- Fig. 2 is a rear elevation ofthe complete mechanismof the lock showing the tumbler controlledmechanism in locked os'ition, three of the bolts being broken ofl Fig. 3is, a similar view with the parts in the position they assume when inunbolted position. Fig. 4 is a section taken on line 4% of Fig. 2.

Referring to the drawings, the numeral 1 designates the safe, providedwith the door 2, and disposed for movement within the body of. the doortoward and into engagement with the proper receptacles in the wallsurrounding the same, are a series of bolts 3, 4, 5 and 6, respectively,the bolts when released being automatically actuated by means of thespring 18, as will later appear, the spring 18' being connected to theSpecification of Letters Patent.

Patented Mar. a, rare.

. Application filed September 25, 1911. Serial No. 651,230.

spindle gh the door bler casing 18 and bolt actuating mechanism. Thecasing 11 is disposed upon the rear of the door or mounted therein so asto be movable with the door and: is preferably a rectangular casing.

Keyed upon the inner end of the stem 9 of the handle 7 and rotatabletherewith, is a circular disk or plate 12,- .provided with a series ofcam slots 13, in this particular instance being four, and in whichisadapted to slide the respective pins 14 of the three bolt stems 15, andthe frame actuating stem 16. The bolt actuating stem 15 is connect ed tothe respective bolts 3', l and 5 and the casing actuating stem 16 isrectangular frame 17 having the short bolt 6.

Connected with the casing 11 and within the rectangular frame 17 in afixed position, is a circular tumbler casing or band 18, which incases aseries of four tumblers 19 and a single tumbler 20, said tumbler 20being somewhat larger in diameter than the tumblers 19 so as to permitthe reduced portion 27 carried by the rectangular frame 17, and thepurpose of which will presently appear, to engage the slot 25 of thetumbler connected to the 20, even though the peripheries of the tumblers19 are in contact with the projection 27. The tumblers 19 and 20 are ofusual construction and are connected to be operated by the stem 10,whereby the slots 25 of the same maybe thrown into and out of regis-'trat-ion with each other when the combination has been setor released,and the purpose of which will presently appear.

Mounted on the stem 10 at one end of the casing or band 18, is thetumbler 20, whose boss 21 has connected-thereto one end of the coiledspring 24' as at 23, the outer end of said spring being connected to thecasing 18. The tumbler 20 is the first tumbler to be actuated when thecombination is being set, the other tumblers being operated insuccession as will presently appear. When all of the peripheral slots 25of the various tumblers 19 and 20 are in registration or aline, with theslot 26 of the casing 18, the lugs or projections 27-27 carried by theframe 17 will assume the position as shown in Fig. 3, thus retractingthe bolts 3, at, and 6. The lug 27 as indicated, is provided with thereduced portion 27, which registers with the slot 26 of the tumbler 20.

From the foregoing description, taken in connection with the drawings,the operation of the present lock is readily understood,lout brieflystated it is as follows z-Assuming that the tumblers 19 and 20 are ofthe usual permutation lock character, and it is desired to move thebolts 3, 4, 5 and (5 from the position shown in Fig. '2 to that shown inFig. 3, the stem 9 which is now under the tension of the spring 18, hasa normal tension to 1'0- tate to retract the bolts to seat the lugs27-27 within the slots 25 of the tumblers 19 and 20 when they arealined. It is therefore necessary to operate the stem 10 to bring theslots 25 of the various tumblers 19 and 20 into registration with theslot 26 of the casing 18,.and in order to do this, the'knob 10 isrotated clockwise approximately 5 of a revolution, such distanceselecting the inner tumbler 20 and placing its slot 25 into registrationwith the slot 213, this action winding the spring 22} to its fullesttension and permitting the lug 27 to slightly engage the slot 25 of thetumbler 20 and thus lock the tumbler 20 and the spring 23 wound. Theknob 10 is now rotated in the opposite direction or counterclockwise forapproximately of the distance of the last rotation or until the slot 25of the inner tumbler 19, adj acent to the tumbler 20, is placed intoregistration with the slot 26. The stem 10 is now rotatedclockwiseapproximately of the distanceof the first rotation or until thesecond tumbler 19 has its slot 25 placed in registration with the slot26. The stem 10 is now rotated counter-clockwise approximately adistance of one-half the distance of the first rotation or until theslot of the tumbler 19 next to the outer tumbler 19 is placed inregistration with the slot 26 of the casing 18.

The final movement of the stem 10 is the rotation thereof clockwiseapproximately the distance of the first rotation or until the slot 25 ofthe outer tumbler 19 alines with all of the various slots of thetumblers 19 and 20, and with the slot 26, at which time, the lugs2'7-27'. due to the action of the spring 18 and the rotation of the stem9, will be moved inwardly and seated fully within the alined slots 25 ofthe tumblers 19 and 20. Thus the spring 18 automatically retracts thebolts 3, 4. 5 and 6.

It will. thus be seen that the seating of the lugs 2'(27 within theregistering slots 25 of the tumblers 19 and 20 is automatic, and

' that the placing of the slots 25 of the various tumblers 19 and 20outof registration is also automatic through the action of the spring Thusthe bolts 3, at, 5 and 6 are released. to automatically retract when thespring 23 is placed under tension and the various slots 25 of thetumblers 19 and 20 are 'in the position to receive the lugs 27-27, andthat the moment the stem 9 is manually operated to place the spring 18'under tension, andto unseat or remove the lugs 27-27 from the alinedslots 25,that the spring 2 will move all of the tumblers 19 and 20 sothat their peripheries will bridge the slot 26 and hold the lugs 27-27'in the position, as shown in Fig. 2, with the bolts projected. 1

What is claimed is: Y

1. In a combination look, a casing, a plurality of tumblers mountedtherein, a knob actuated stem operably connected to said tumblers, aslidable frame carrying a locking bolt surrounding said tumblers,co-acting means carried by said frame and the tumblers to permit anoscillatory movement of saidframe, a spring actuated stem journaled inthe casing and parallel with the knob actuated stem, and means carriedby said last mentioned stem for operably connecting the stem totheframe, whereby the spring actuated stem is automatically rotated and theby the tumblers.

2. In a combination look, a casing, a circular tumbler casingdisposedtherein, a series of tumblers mounted in said tumbler, casing, a stem.for actuating said tumblers journaled in the main casingand operableexteriorly thereof, a springfor operating the stem and the tumblers inone direction, said spring being wound as the stem is manually operated,a frame for carrying a locking bolt surrounding the tumbler casingwithin the main casing and capable of a reciprocatory movement, saidtumbler casing and tumblersbeing provided withslots adapted to be placedin register, a lug carried by the frame and disposed in line with theslot of the tumbler casing, said lug being '95 frame retracted whenfreed v positioned to move into the slots of the tumblers when saidslots register with the slot of the tumbler casing, another stemdisposed parallel to the first mentioned stem ing bolt surrounding thetumbler casing within the main casing and capable of are riprocatorymovement, said tumbler casing and tumblers being provided with slots 5adapted to be placed in register, a lug carried by the frame anddisposed in line with the slot of the tumbler casing. said lugbeingpositioned to more into the slots of the tumblers when they registerwith the slot of the tumbler casing, means for recipro eating the frameand locking bolt, a spring for actuating said means automatically whenthe slots of the tumblers and tumbler casing are in alinement to retractthe frame and bolt, and a series of locking bolts operably connected tothe said last mentioned means and operable simultaneously with thereciprocatory frame and its bolt.

4. In a combination lock, a rectangular casing, a tumbler casingdisposed therewithin and provided with a slot in the wall thereof, aplurality of tumblers disposed in said tumbler casing, each of saidtumblers being provided with a slot adapted" to register witlrthe slotof the tumbler casing, means for operating said tumblers to throw theirslots into alinement with the slot of the tumbler casing, areciprocatory frame disposed within the main casing and surrounding thetumbler casing, a locking bolt carried thereby, a lug provided upon theframe and in alinement with the locking bolt and positioned to registerwith the slot of the tumbler casing when in looking position and to fitwithin the slots of the tumblers in unlocking position, a stem carriedby said frame upon the opposite side to the locking bolt and within themain casing, manually operated means connected to said last mentionedstem for moving the frame and locking bolt into locked position, and aspring for automatically moving the frame and bolt into releasedposition.

The combination with a door, of a combination lock therefor, comprisinga main 5 casing carried by said door, a tumbler casing mounted in saidmain casing, said tumbler casing being provided with a slot in its wall,a plurality of tumblers disposed within said tumbler casing, eachprovided with a slot adapted to register with the slot of the tumblercasing, manually operable means for actuating said tumblers in onedirection, a spring for actuating the tumblers in the oppositedirection, said spring being wound as the said means is manuallyactuated, a frame disposed for reciprocation within the main casing andsurrounding the tumbler casing, a locking bolt carried by said frame andadapted to project through the main casing to lock the door, a lugcarried by the frame upon the opposite side to the locking bolt and inline to register with the slots of. the tumbler casing, said lug whenthe slots of the tumblers register with the slot of the tumbler casingbeing retracted therein to release the locking bolt, a spring returnedstem operable exteriorly of the door and mounted within the casing forreciprocating the frame to project and retract the locking bolt, and aplurality of bolts disposed within the door and operably connected tosaid stem for simultaneous movement with the reciprocation of the frameand lockin bolt.

In testimony hat I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

JOHN H. HOBSON.

Witnesses p R. M. ADAMS, J OHN BUTLER.

